[Tinea capitis in school children in London].

An account is given of the increase in incidence of scalp ringworm seen in London school children over a twelve year period. The increase was accompanied by the isolation of a greater variety of species of dermatophytes some of which are not indigenous to Britain, such as Trichophyton soudanense. Four main radical groups of children were investigated and the distribution of the fungi causing scalp infections among them determined.